Pasteboakd



`UNITED STATES PATENT OFFICE.

Louis xOoH, or New YORK, N. Y.

MACHINE FOR MAKING PASTEBOARD.

Specication of Letters Patent No. 16,927, dated March 31, 185'?.

` To all 'whom it may concern:

ing and pressing roller. Fig. II is an outthe required thickness` isObtained, when the side view of the same and Fig. III is a front view.

In the present mode of manufacturing pasteboard, the paper web, formedon the common wire gauze cylinder inthe usual manner, is brought by andupon an endless felt between two rollers, the upper one O-f which `iscalled the forming roller, upon which said paper web is wound during asmany revolutions of the said roller, until workman, following with asuitable instrument a groove running the whole length of the roller,cuts the so formed board in two,

and then grasping with his hands the corners of the board at the nextrevolution, tears' the same off from said roller, by which arrangementit not only requires great attention to Obtain the boards all the samethickness but atsame time va great diiiiculty is experienced in themanner of taking the boards off from the roller without tearing orbreaking the same.

` My improvement consists rst in an arrangement by which `the board iscut through or to-rn asunder by the machine; when the'same has obtainedany` desired thickness which can beeasily regulated and secondlycombining `therewith an arrange` ment whereby the such cut board istaken ofi'l from the roller upon which the same has been formed.

The paper web is first prepared upon a common wire gauze cylinder in theusual manner and is then carried upon the felt F between the rollers Aand B. `The roller A is called the forming roller and is covered withmuslin or linen, the adhering property of which with the paper webcauses the latter to wind itself around said forming roller A instead offollowing the felt which rulilis` T e circumference of this formingroller is made equal to the required length of one board. These rollersA and B run in boxes fitted into the side frames G of the machine. Theboxes of the lower roller B` are acted upon by screws D by which saidroller is firmly fixed in its place, and the boxes of the upper roller Aare acted upon by the weights W so as to press this forming rolleragainst the lower roller B. By the pressure thereby produced the moistsurfaces of the paper,

web `will be made to adhere to each other as the same is secured uponthe forming roller, and at the same time the water contained in the samewill be partially pressed out.

E is a roller turning in suitable boxes ca-H` pable of sliding ingrooves in the frame C and pressed by springs (a), acting against saidboxes, against the face of the forming roller A. 'To the boxes of saidroller E an arm Gr is attached, provided on its other end, with amovable screw or projection, O, which is consequently carried backwardwith this roller E, `.when said roller is forced away from theformingroller A in consequence of its gradually increasing diameter bythe intermediate thickness of the board formed aroundsaid roller A.

In theforming roller A a movableslide P, which extends the whole lengthof said roller, is fitted sliding in a suitable box and acted uponbysmall springs f. On the outside of the forming roller A an arm H isattached tO this slide P, into which the lever R is' ttedbearing againsta nose, n, on said arm H, and acted upon by a small spring to keep saidlever R in its place, preventing thereby the'slide P from being pressedoutward, by the action of its springs f. The other end of this lever Rforms an inclined plane, having at the extremest point of its length andtoward the line of motion of the projection or screw O, its higherpoint. From this point the inclination of the plane diminishes to allsides regularly, so that all other points from this end of the lever R;lie in a lower position. The position of the screw O of the arm G whenthe roller E is in direct contact with the forming roller A,

`is in the lowest point of the plane on the lever R during the time oftheir meeting, and it follows that when said roller E is forced awayfrom the roller A by the increasing thickness of the board, thescrew Owhich is moved with and through this roller E will touch at eachrevolution of the roller A, the plane on `the end of the lever R butwithoutjcommunicating sufficient motion to saidlever R, to. force theother end o-f the same away and clear of the nose n on the arm H, untilthe roller E hasbeen so far pressed away fro-m the forming roller A asto bring thereby the screw O on the end of the arm Gr opposite to thatpoint on the plane on the end of the lever R where the motion therebyproduced, is suflicient to force the lever B, clear of the nose (n) onthe arm H, thereby setting said arm H as well as the slide P at liberty,when the action of the springs f will force said slide P outward. Bychanging the position of the screw O, the distance to which the roller E`shall be forced away from the forming roller vH and consequently withthe slide P.

g, is a projection fast on the frames C of the machine.

The roller E which is pressed by the spring a' against the formingroller A, upon which the paper web is wound, as before described will begradually forced away from said roller A as the board increases inthickness taking with it the arm G and Vscrew 0.-l/Vhen the paste boardhas obtained the required thickness which is regulated by the-positionof the screw O, said screw O acts upon the lever R so as to force thelevery R away and clear of the nose n on the arm H setting thereby theslide P at liberty which will then be forced outward by the springs f,by which action the paste board which has been formed on the roller Awill be cut in two. To facilitate this cutting or tearing of the thickpasteboard a recess, o, forming a groove: running the whole length ofthe roller A vis made on the top edge of the slide P or immediatelybefore the same in the body of the roller A by which consequently thepulpy substance is at that part under no pressure from the roller B, andcontains more water than anywhere else. The cohesion of the fiber of thepulp is therefore weakest at this point, and by the springing out of theslide P the board is easily torn asunder at that point, whereas itadheres to the solid part of the slide P, so that the same is, by thespringing out of the slide, loosened from the roller A the whole spacebetween the slide P and the touching point of the roller E.

Instead of cutting the board after the same has obtained the requiredthickness by means of a movable slide in the manner above described, ahinge, vlet into the forming roller A the whole length Hush with thecircumference of the same may be substituted and operated by levers insuch a manner as to make said hinge fly open when the required thicknessof the board is obtained.

S is a movable frame running the whole length of the forming roller Aand turning in bearings in the frames C of the machine, provided witharm w connected with levers m, which latter are acted upon by projectingpins, r, fast on the ends of the forming roller A, by the actions ofthese pins, r, against one end of the levers m a downward motion iscommunicated to the movable frame S, by each revolution of the roller A.A small spring or weight brings this frame S back again into itsoriginal position. To this frame S a piece of leather vor india rubberw, is attached extending the whole length of the forming roller A andprojecting toward the roller A so far, that it overlaps the slide P whenthe same is pressed out about one quarter of an inch. l

When the slide P has cut the board and partly loosened the same from theforming roller A as above described, the pins, 7", on the ends of theroller A act upon'the levers m and 'communicate thereby a downwardmotion to the frame S by which motion the india rubber strips the boardoff from the endl of the slide P when said board falls upon the roller pand felt T and is carried away upon this endless felt T.

By the springing out of the slide P the levers p and c which areconnected with the arm H of the slide P have been moved with ythe same,by which motion the end of the leverflc has been thrown outward. By thefurther revolution of the roller A the projection g on the frames Ccomes into contact with the end of the lever 7c pushing the same back,and which later by its action upon the arm H forces thereby the slide Pback again into the roller A when the lever R by the action of itsspring is again forced against the nose n of the arm H holding therebythe slide P fast in the roller A. By the further revolution of theroller A the remaining board is loosened from said roller A, by its ownweight and is taken olf successively by the roller p and endless felt Tuntil the end of the board has left theA point of contact between therollerE and the forming roller A.

When the board has passed from between the rollers A and E and saidroller E is no more separated from the former by any intermediatethickness said roller E is then again forced into its old positiontogether with its arm Gr and screw O, by the action of the springs whenthe above described operation will'be repeated.

so y

What I claim as my invention and desire to secure by Letters Patent sl.rIhe arrangement of the rollerE in connection With the arm Gr andprojection or screw O for the purpose of operating the lever R by whichthe slide P is held fast or set at liberty When the board has obtainedthe required thickness, together With the arrangement of regulating bymeans of said screw O the required thickness of the pasteboard in themanner specified.

2. I claim the movable slide P or its equivalent constructed andoperated as described, and for the purpose of cutting or tearing andlifting the pasteboard Which Was formed on the roller A from said rollerafter the same has obtained the required thickness. n

3. I claim the arrangement of the movable frame S With leather or itsequivalent attached, for the purpose of stripping oft1 the cut pasteboard from the end of the slide P the Whole being operated in the manneras specified. s LOUIS KOCH. Witnesses:

HENRY E. ROEDER, J. AOKENHAUSEN.

